The peak expiratory flow (PEF), also called peak expiratory flow rate (PEFR) and peak flow measurement, is a person's maximum speed of expiration, as measured...

MMEF or MEF stands for maximal (mid-)expiratory flow and is the peak of expiratory flow as taken from the flow-volume curve and measured in liters per...

also causes a decreased total lung capacity (TLC) by 5% and decreased expiratory reserve volume by 20%. Tidal volume increases by 30–40%, from 0.5 to 0...

expiratory phase, or may be quite normal. Consequently, a potential for under-diagnosis exists. Measurement of airflow, such as peak expiratory flow rates...

according to the frequency of symptoms of forced expiratory volume in one second (FEV1), and peak expiratory flow rate. It may also be classified as atopic or...

lung volumes are tidal volume (VT), inspiratory reserve volume (IRV), expiratory reserve volume (ERV), and residual volume (RV). The four lung capacities...

on the stability of the patient's maximum speed of expiration, or peak expiratory flow rate (PEFR). Type 1 is characterized by a maintained wide PEF variability...

pulmonary function testing which shows a characteristic reduction in peak expiratory flow (PEF), physical examination, and imaging such as computed tomography...

(chemotherapy regimen) PEEP positive end-expiratory pressure PEF peak expiratory flow PEFR peak expiratory flow rate PEG percutaneous endoscopic gastrostomy...

The peak expiratory flow can be measured at the bedside; in acute severe asthma, the flow is less than 50% of a person's normal or predicted flow. Very...